Title: Scan error when calling the 'is_safe_file' function.
Last modified: August 30, 2016

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# Scan error when calling the 'is_safe_file' function.

 *  Resolved [dweinberger](https://wordpress.org/support/users/dweinberger/)
 * (@dweinberger)
 * [10 years, 8 months ago](https://wordpress.org/support/topic/scan-error-when-calling-the-is_safe_file-function/)
 * On my first scan I got this error:
 * > Scan terminated with error: We received an empty data response from the Wordfence
   > scanning servers when calling the ‘is_safe_file’ function.
 * I can’t find anything online about it. Suggestions?
 * [https://wordpress.org/plugins/wordfence/](https://wordpress.org/plugins/wordfence/)

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [WFMattR](https://wordpress.org/support/users/wfmattr/)
 * (@wfmattr)
 * [10 years, 8 months ago](https://wordpress.org/support/topic/scan-error-when-calling-the-is_safe_file-function/#post-6627662)
 * I haven’t seen that happen on a first scan before. There is a chance that there
   was a temporary problem on the server (I don’t know of any issues around the 
   time of your post) or your host’s network.
 * On the Wordfence Options page, can you click the link near the bottom that says“
   Click to test connectivity to the Wordfence API servers”, and post the results
   here?
 * If all of the tests say that they “passed”, can you try running the scan again,
   and see if you have an error message again?
 * -Matt R
 *  [davidjoho](https://wordpress.org/support/users/davidjoho/)
 * (@davidjoho)
 * [10 years, 8 months ago](https://wordpress.org/support/topic/scan-error-when-calling-the-is_safe_file-function/#post-6627663)
 * Hi, Matt.
 * I did a scan a few minutes after I got the error and it all went through fine.
 * Here are the results of the test:
 * DNS lookup for noc1.wordfence.com returns: 69.46.36.8
 * STARTING CURL http CONNECTION TEST….
    Curl connectivity test passed.
 * STARTING CURL https CONNECTION TEST….
    Curl connectivity test passed.
 * Starting wp_remote_post() test
    wp_remote_post() test to noc1.wordfence.com passed!
 * Starting wp_remote_post() test
    wp_remote_post() test to noc1.wordfence.com passed!
 *  Plugin Author [WFMattR](https://wordpress.org/support/users/wfmattr/)
 * (@wfmattr)
 * [10 years, 8 months ago](https://wordpress.org/support/topic/scan-error-when-calling-the-is_safe_file-function/#post-6627664)
 * Ok, great — it sounds like it was a temporary issue, then. If it does come back
   again, let us know.
 * Just to confirm — are you the original poster above, just logged in with a different
   user ID?
 * -Matt R

Viewing 3 replies - 1 through 3 (of 3 total)

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## Tags

 * [scan error](https://wordpress.org/support/topic-tag/scan-error/)

 * 3 replies
 * 3 participants
 * Last reply from: [WFMattR](https://wordpress.org/support/users/wfmattr/)
 * Last activity: [10 years, 8 months ago](https://wordpress.org/support/topic/scan-error-when-calling-the-is_safe_file-function/#post-6627664)
 * Status: resolved